Home / 76,239.15-105,210.65-42,248.21

Finding the Fourth Proportional to 76,239.15, 105,210.65 and 42,248.21

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Solution

The fourth proportional to 76,239.15, 105,210.65 and 42,248.21 is: 58,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,239.15 : 105,210.65 = 42,248.21 : x
  2. Step 2: Convert to fraction form
    76,239.15/105,210.65 = 42,248.21/x
  3. Step 3: Cross multiply
    76,239.15x = 105,210.65 × 42,248.21
  4. Step 4: Simplify right side
    76,239.15x = 4,444,960,898.14
  5. Step 5: Solve for x
    x = 4,444,960,898.14/76,239.15
  6. Step 6: Final answer
    x = 58,302.87

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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.