Home / 78,656,781.51-108,546,822.34-45,636,691.88

Finding the Fourth Proportional to 78,656,781.51, 108,546,822.34 and 45,636,691.88

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Solution

The fourth proportional to 78,656,781.51, 108,546,822.34 and 45,636,691.88 is: 62,978,903.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,656,781.51 : 108,546,822.34 = 45,636,691.88 : x
  2. Step 2: Convert to fraction form
    78,656,781.51/108,546,822.34 = 45,636,691.88/x
  3. Step 3: Cross multiply
    78,656,781.51x = 108,546,822.34 × 45,636,691.88
  4. Step 4: Simplify right side
    78,656,781.51x = 4,953,717,885,840,956
  5. Step 5: Solve for x
    x = 4,953,717,885,840,956/78,656,781.51
  6. Step 6: Final answer
    x = 62,978,903.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.