Home / 48,045.82-72,070.55-12,985.49

Finding the Fourth Proportional to 48,045.82, 72,070.55 and 12,985.49

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Solution

The fourth proportional to 48,045.82, 72,070.55 and 12,985.49 is: 19,478.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,045.82 : 72,070.55 = 12,985.49 : x
  2. Step 2: Convert to fraction form
    48,045.82/72,070.55 = 12,985.49/x
  3. Step 3: Cross multiply
    48,045.82x = 72,070.55 × 12,985.49
  4. Step 4: Simplify right side
    48,045.82x = 935,870,981.04
  5. Step 5: Solve for x
    x = 935,870,981.04/48,045.82
  6. Step 6: Final answer
    x = 19,478.72

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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.