Home / 87,101,999.40-130,652,999.10-70,977,685.80

Finding the Fourth Proportional to 87,101,999.40, 130,652,999.10 and 70,977,685.80

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Solution

The fourth proportional to 87,101,999.40, 130,652,999.10 and 70,977,685.80 is: 106,466,528.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,101,999.40 : 130,652,999.10 = 70,977,685.80 : x
  2. Step 2: Convert to fraction form
    87,101,999.40/130,652,999.10 = 70,977,685.80/x
  3. Step 3: Cross multiply
    87,101,999.40x = 130,652,999.10 × 70,977,685.80
  4. Step 4: Simplify right side
    87,101,999.40x = 9,273,447,518,947,482
  5. Step 5: Solve for x
    x = 9,273,447,518,947,482/87,101,999.40
  6. Step 6: Final answer
    x = 106,466,528.70

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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.