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Finding the Fourth Proportional to 48,302.60, 72,453.90 and 42,859.40

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Solution

The fourth proportional to 48,302.60, 72,453.90 and 42,859.40 is: 64,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,302.60 : 72,453.90 = 42,859.40 : x
  2. Step 2: Convert to fraction form
    48,302.60/72,453.90 = 42,859.40/x
  3. Step 3: Cross multiply
    48,302.60x = 72,453.90 × 42,859.40
  4. Step 4: Simplify right side
    48,302.60x = 3,105,330,681.66
  5. Step 5: Solve for x
    x = 3,105,330,681.66/48,302.60
  6. Step 6: Final answer
    x = 64,289.10

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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.