Home / 76,140.16-105,071.90-42,148.68

Finding the Fourth Proportional to 76,140.16, 105,071.90 and 42,148.68

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Solution

The fourth proportional to 76,140.16, 105,071.90 and 42,148.68 is: 58,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,140.16 : 105,071.90 = 42,148.68 : x
  2. Step 2: Convert to fraction form
    76,140.16/105,071.90 = 42,148.68/x
  3. Step 3: Cross multiply
    76,140.16x = 105,071.90 × 42,148.68
  4. Step 4: Simplify right side
    76,140.16x = 4,428,641,890.09
  5. Step 5: Solve for x
    x = 4,428,641,890.09/76,140.16
  6. Step 6: Final answer
    x = 58,164.34

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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.