Home / 83,715.72-115,558.02-55,430.52

Finding the Fourth Proportional to 83,715.72, 115,558.02 and 55,430.52

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Solution

The fourth proportional to 83,715.72, 115,558.02 and 55,430.52 is: 76,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,715.72 : 115,558.02 = 55,430.52 : x
  2. Step 2: Convert to fraction form
    83,715.72/115,558.02 = 55,430.52/x
  3. Step 3: Cross multiply
    83,715.72x = 115,558.02 × 55,430.52
  4. Step 4: Simplify right side
    83,715.72x = 6,405,441,138.77
  5. Step 5: Solve for x
    x = 6,405,441,138.77/83,715.72
  6. Step 6: Final answer
    x = 76,514.20

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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.