Home / 66,957.13-92,408.12-42,780.18

Finding the Fourth Proportional to 66,957.13, 92,408.12 and 42,780.18

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Solution

The fourth proportional to 66,957.13, 92,408.12 and 42,780.18 is: 59,041.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,957.13 : 92,408.12 = 42,780.18 : x
  2. Step 2: Convert to fraction form
    66,957.13/92,408.12 = 42,780.18/x
  3. Step 3: Cross multiply
    66,957.13x = 92,408.12 × 42,780.18
  4. Step 4: Simplify right side
    66,957.13x = 3,953,236,007.06
  5. Step 5: Solve for x
    x = 3,953,236,007.06/66,957.13
  6. Step 6: Final answer
    x = 59,041.30

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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.