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Finding the Fourth Proportional to 72,001.80, 100,671.30 and 72,001.80

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Solution

The fourth proportional to 72,001.80, 100,671.30 and 72,001.80 is: 100,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.80 : 100,671.30 = 72,001.80 : x
  2. Step 2: Convert to fraction form
    72,001.80/100,671.30 = 72,001.80/x
  3. Step 3: Cross multiply
    72,001.80x = 100,671.30 × 72,001.80
  4. Step 4: Simplify right side
    72,001.80x = 7,248,514,808.34
  5. Step 5: Solve for x
    x = 7,248,514,808.34/72,001.80
  6. Step 6: Final answer
    x = 100,671.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.