Home / 72,017.74-99,385.77-39,756.16

Finding the Fourth Proportional to 72,017.74, 99,385.77 and 39,756.16

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Solution

The fourth proportional to 72,017.74, 99,385.77 and 39,756.16 is: 54,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,017.74 : 99,385.77 = 39,756.16 : x
  2. Step 2: Convert to fraction form
    72,017.74/99,385.77 = 39,756.16/x
  3. Step 3: Cross multiply
    72,017.74x = 99,385.77 × 39,756.16
  4. Step 4: Simplify right side
    72,017.74x = 3,951,196,573.84
  5. Step 5: Solve for x
    x = 3,951,196,573.84/72,017.74
  6. Step 6: Final answer
    x = 54,864.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.