Home / 78,423.02-108,223.56-42,613.03

Finding the Fourth Proportional to 78,423.02, 108,223.56 and 42,613.03

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Solution

The fourth proportional to 78,423.02, 108,223.56 and 42,613.03 is: 58,805.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,423.02 : 108,223.56 = 42,613.03 : x
  2. Step 2: Convert to fraction form
    78,423.02/108,223.56 = 42,613.03/x
  3. Step 3: Cross multiply
    78,423.02x = 108,223.56 × 42,613.03
  4. Step 4: Simplify right side
    78,423.02x = 4,611,733,595.92
  5. Step 5: Solve for x
    x = 4,611,733,595.92/78,423.02
  6. Step 6: Final answer
    x = 58,805.87

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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.