Home / 85,408,876.80-128,113,315.20-39,350,656.80

Finding the Fourth Proportional to 85,408,876.80, 128,113,315.20 and 39,350,656.80

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Solution

The fourth proportional to 85,408,876.80, 128,113,315.20 and 39,350,656.80 is: 59,025,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,408,876.80 : 128,113,315.20 = 39,350,656.80 : x
  2. Step 2: Convert to fraction form
    85,408,876.80/128,113,315.20 = 39,350,656.80/x
  3. Step 3: Cross multiply
    85,408,876.80x = 128,113,315.20 × 39,350,656.80
  4. Step 4: Simplify right side
    85,408,876.80x = 5,041,343,097,945,423
  5. Step 5: Solve for x
    x = 5,041,343,097,945,423/85,408,876.80
  6. Step 6: Final answer
    x = 59,025,985.20

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.