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Finding the Fourth Proportional to 71,064,259.80, 106,596,389.70 and 65,962,426.20

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Solution

The fourth proportional to 71,064,259.80, 106,596,389.70 and 65,962,426.20 is: 98,943,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,064,259.80 : 106,596,389.70 = 65,962,426.20 : x
  2. Step 2: Convert to fraction form
    71,064,259.80/106,596,389.70 = 65,962,426.20/x
  3. Step 3: Cross multiply
    71,064,259.80x = 106,596,389.70 × 65,962,426.20
  4. Step 4: Simplify right side
    71,064,259.80x = 7,031,356,488,772,691
  5. Step 5: Solve for x
    x = 7,031,356,488,772,691/71,064,259.80
  6. Step 6: Final answer
    x = 98,943,639.30

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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.