Home / 103,479.02-142,812.85-57,543.22

Finding the Fourth Proportional to 103,479.02, 142,812.85 and 57,543.22

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Solution

The fourth proportional to 103,479.02, 142,812.85 and 57,543.22 is: 79,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,479.02 : 142,812.85 = 57,543.22 : x
  2. Step 2: Convert to fraction form
    103,479.02/142,812.85 = 57,543.22/x
  3. Step 3: Cross multiply
    103,479.02x = 142,812.85 × 57,543.22
  4. Step 4: Simplify right side
    103,479.02x = 8,217,910,747.45
  5. Step 5: Solve for x
    x = 8,217,910,747.45/103,479.02
  6. Step 6: Final answer
    x = 79,416.20

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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.