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Finding the Fourth Proportional to 58,307.40, 87,461.10 and 18,865.80

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Solution

The fourth proportional to 58,307.40, 87,461.10 and 18,865.80 is: 28,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,307.40 : 87,461.10 = 18,865.80 : x
  2. Step 2: Convert to fraction form
    58,307.40/87,461.10 = 18,865.80/x
  3. Step 3: Cross multiply
    58,307.40x = 87,461.10 × 18,865.80
  4. Step 4: Simplify right side
    58,307.40x = 1,650,023,620.38
  5. Step 5: Solve for x
    x = 1,650,023,620.38/58,307.40
  6. Step 6: Final answer
    x = 28,298.70

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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.