Home / 85,613.02-128,332.05-29,436.28

Finding the Fourth Proportional to 85,613.02, 128,332.05 and 29,436.28

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Solution

The fourth proportional to 85,613.02, 128,332.05 and 29,436.28 is: 44,124.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,613.02 : 128,332.05 = 29,436.28 : x
  2. Step 2: Convert to fraction form
    85,613.02/128,332.05 = 29,436.28/x
  3. Step 3: Cross multiply
    85,613.02x = 128,332.05 × 29,436.28
  4. Step 4: Simplify right side
    85,613.02x = 3,777,618,156.77
  5. Step 5: Solve for x
    x = 3,777,618,156.77/85,613.02
  6. Step 6: Final answer
    x = 44,124.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.