Home / 78,631.67-108,513.65-42,823.62

Finding the Fourth Proportional to 78,631.67, 108,513.65 and 42,823.62

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Solution

The fourth proportional to 78,631.67, 108,513.65 and 42,823.62 is: 59,097.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,631.67 : 108,513.65 = 42,823.62 : x
  2. Step 2: Convert to fraction form
    78,631.67/108,513.65 = 42,823.62/x
  3. Step 3: Cross multiply
    78,631.67x = 108,513.65 × 42,823.62
  4. Step 4: Simplify right side
    78,631.67x = 4,646,947,312.41
  5. Step 5: Solve for x
    x = 4,646,947,312.41/78,631.67
  6. Step 6: Final answer
    x = 59,097.66

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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.