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Finding the Fourth Proportional to 76,707.57, 105,854.47 and 74,444.02

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Solution

The fourth proportional to 76,707.57, 105,854.47 and 74,444.02 is: 102,730.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,707.57 : 105,854.47 = 74,444.02 : x
  2. Step 2: Convert to fraction form
    76,707.57/105,854.47 = 74,444.02/x
  3. Step 3: Cross multiply
    76,707.57x = 105,854.47 × 74,444.02
  4. Step 4: Simplify right side
    76,707.57x = 7,880,232,281.77
  5. Step 5: Solve for x
    x = 7,880,232,281.77/76,707.57
  6. Step 6: Final answer
    x = 102,730.83

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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.