Home / 78,557.13-108,407.93-42,746.53

Finding the Fourth Proportional to 78,557.13, 108,407.93 and 42,746.53

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Solution

The fourth proportional to 78,557.13, 108,407.93 and 42,746.53 is: 58,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,557.13 : 108,407.93 = 42,746.53 : x
  2. Step 2: Convert to fraction form
    78,557.13/108,407.93 = 42,746.53/x
  3. Step 3: Cross multiply
    78,557.13x = 108,407.93 × 42,746.53
  4. Step 4: Simplify right side
    78,557.13x = 4,634,062,365.82
  5. Step 5: Solve for x
    x = 4,634,062,365.82/78,557.13
  6. Step 6: Final answer
    x = 58,989.71

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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.