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Finding the Fourth Proportional to 48,988.80, 73,495.68 and 20,894.72

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Solution

The fourth proportional to 48,988.80, 73,495.68 and 20,894.72 is: 31,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,988.80 : 73,495.68 = 20,894.72 : x
  2. Step 2: Convert to fraction form
    48,988.80/73,495.68 = 20,894.72/x
  3. Step 3: Cross multiply
    48,988.80x = 73,495.68 × 20,894.72
  4. Step 4: Simplify right side
    48,988.80x = 1,535,671,654.81
  5. Step 5: Solve for x
    x = 1,535,671,654.81/48,988.80
  6. Step 6: Final answer
    x = 31,347.40

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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.