Home / 78,732,145.70-118,098,218.55-21,222,356.30

Finding the Fourth Proportional to 78,732,145.70, 118,098,218.55 and 21,222,356.30

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Solution

The fourth proportional to 78,732,145.70, 118,098,218.55 and 21,222,356.30 is: 31,833,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,145.70 : 118,098,218.55 = 21,222,356.30 : x
  2. Step 2: Convert to fraction form
    78,732,145.70/118,098,218.55 = 21,222,356.30/x
  3. Step 3: Cross multiply
    78,732,145.70x = 118,098,218.55 × 21,222,356.30
  4. Step 4: Simplify right side
    78,732,145.70x = 2,506,322,472,463,369.50
  5. Step 5: Solve for x
    x = 2,506,322,472,463,369.50/78,732,145.70
  6. Step 6: Final answer
    x = 31,833,534.45

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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.