Home / 78,460.02-108,272.55-42,649.11

Finding the Fourth Proportional to 78,460.02, 108,272.55 and 42,649.11

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Solution

The fourth proportional to 78,460.02, 108,272.55 and 42,649.11 is: 58,854.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,460.02 : 108,272.55 = 42,649.11 : x
  2. Step 2: Convert to fraction form
    78,460.02/108,272.55 = 42,649.11/x
  3. Step 3: Cross multiply
    78,460.02x = 108,272.55 × 42,649.11
  4. Step 4: Simplify right side
    78,460.02x = 4,617,727,894.93
  5. Step 5: Solve for x
    x = 4,617,727,894.93/78,460.02
  6. Step 6: Final answer
    x = 58,854.53

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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.