Home / 86,508,045.90-129,762,068.85-82,681,670.70

Finding the Fourth Proportional to 86,508,045.90, 129,762,068.85 and 82,681,670.70

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Solution

The fourth proportional to 86,508,045.90, 129,762,068.85 and 82,681,670.70 is: 124,022,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,508,045.90 : 129,762,068.85 = 82,681,670.70 : x
  2. Step 2: Convert to fraction form
    86,508,045.90/129,762,068.85 = 82,681,670.70/x
  3. Step 3: Cross multiply
    86,508,045.90x = 129,762,068.85 × 82,681,670.70
  4. Step 4: Simplify right side
    86,508,045.90x = 10,728,944,646,006,428
  5. Step 5: Solve for x
    x = 10,728,944,646,006,428/86,508,045.90
  6. Step 6: Final answer
    x = 124,022,506.05

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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.