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Finding the Fourth Proportional to 60,779.40, 91,341.90 and 53,176.20

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Solution

The fourth proportional to 60,779.40, 91,341.90 and 53,176.20 is: 79,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,779.40 : 91,341.90 = 53,176.20 : x
  2. Step 2: Convert to fraction form
    60,779.40/91,341.90 = 53,176.20/x
  3. Step 3: Cross multiply
    60,779.40x = 91,341.90 × 53,176.20
  4. Step 4: Simplify right side
    60,779.40x = 4,857,215,142.78
  5. Step 5: Solve for x
    x = 4,857,215,142.78/60,779.40
  6. Step 6: Final answer
    x = 79,915.48

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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.