Home / 85,408,867.80-128,113,301.70-39,350,647.80

Finding the Fourth Proportional to 85,408,867.80, 128,113,301.70 and 39,350,647.80

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Solution

The fourth proportional to 85,408,867.80, 128,113,301.70 and 39,350,647.80 is: 59,025,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,408,867.80 : 128,113,301.70 = 39,350,647.80 : x
  2. Step 2: Convert to fraction form
    85,408,867.80/128,113,301.70 = 39,350,647.80/x
  3. Step 3: Cross multiply
    85,408,867.80x = 128,113,301.70 × 39,350,647.80
  4. Step 4: Simplify right side
    85,408,867.80x = 5,041,341,413,691,841
  5. Step 5: Solve for x
    x = 5,041,341,413,691,841/85,408,867.80
  6. Step 6: Final answer
    x = 59,025,971.70

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1.5x scale

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.