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Finding the Fourth Proportional to 76,252.61, 105,228.59 and 42,718.61

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Solution

The fourth proportional to 76,252.61, 105,228.59 and 42,718.61 is: 58,951.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,252.61 : 105,228.59 = 42,718.61 : x
  2. Step 2: Convert to fraction form
    76,252.61/105,228.59 = 42,718.61/x
  3. Step 3: Cross multiply
    76,252.61x = 105,228.59 × 42,718.61
  4. Step 4: Simplify right side
    76,252.61x = 4,495,218,357.32
  5. Step 5: Solve for x
    x = 4,495,218,357.32/76,252.61
  6. Step 6: Final answer
    x = 58,951.67

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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.