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Finding the Fourth Proportional to 101,284.71, 139,779.47 and 55,962.68

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Solution

The fourth proportional to 101,284.71, 139,779.47 and 55,962.68 is: 77,232.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,284.71 : 139,779.47 = 55,962.68 : x
  2. Step 2: Convert to fraction form
    101,284.71/139,779.47 = 55,962.68/x
  3. Step 3: Cross multiply
    101,284.71x = 139,779.47 × 55,962.68
  4. Step 4: Simplify right side
    101,284.71x = 7,822,433,819.81
  5. Step 5: Solve for x
    x = 7,822,433,819.81/101,284.71
  6. Step 6: Final answer
    x = 77,232.13

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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.