Home / 76,863.13-106,071.29-42,870.77

Finding the Fourth Proportional to 76,863.13, 106,071.29 and 42,870.77

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Solution

The fourth proportional to 76,863.13, 106,071.29 and 42,870.77 is: 59,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,863.13 : 106,071.29 = 42,870.77 : x
  2. Step 2: Convert to fraction form
    76,863.13/106,071.29 = 42,870.77/x
  3. Step 3: Cross multiply
    76,863.13x = 106,071.29 × 42,870.77
  4. Step 4: Simplify right side
    76,863.13x = 4,547,357,691.02
  5. Step 5: Solve for x
    x = 4,547,357,691.02/76,863.13
  6. Step 6: Final answer
    x = 59,161.76

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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.