Home / 78,512.52-108,341.70-42,701.80

Finding the Fourth Proportional to 78,512.52, 108,341.70 and 42,701.80

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Solution

The fourth proportional to 78,512.52, 108,341.70 and 42,701.80 is: 58,925.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,512.52 : 108,341.70 = 42,701.80 : x
  2. Step 2: Convert to fraction form
    78,512.52/108,341.70 = 42,701.80/x
  3. Step 3: Cross multiply
    78,512.52x = 108,341.70 × 42,701.80
  4. Step 4: Simplify right side
    78,512.52x = 4,626,385,605.06
  5. Step 5: Solve for x
    x = 4,626,385,605.06/78,512.52
  6. Step 6: Final answer
    x = 58,925.45

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1.5x scale

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.