Home / 85,536,009.80-128,304,014.70-47,272,257.80

Finding the Fourth Proportional to 85,536,009.80, 128,304,014.70 and 47,272,257.80

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Solution

The fourth proportional to 85,536,009.80, 128,304,014.70 and 47,272,257.80 is: 70,908,386.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,009.80 : 128,304,014.70 = 47,272,257.80 : x
  2. Step 2: Convert to fraction form
    85,536,009.80/128,304,014.70 = 47,272,257.80/x
  3. Step 3: Cross multiply
    85,536,009.80x = 128,304,014.70 × 47,272,257.80
  4. Step 4: Simplify right side
    85,536,009.80x = 6,065,220,459,673,389
  5. Step 5: Solve for x
    x = 6,065,220,459,673,389/85,536,009.80
  6. Step 6: Final answer
    x = 70,908,386.70

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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.