Home / 78,688.76-118,069.99-39,248.91

Finding the Fourth Proportional to 78,688.76, 118,069.99 and 39,248.91

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Solution

The fourth proportional to 78,688.76, 118,069.99 and 39,248.91 is: 58,891.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,688.76 : 118,069.99 = 39,248.91 : x
  2. Step 2: Convert to fraction form
    78,688.76/118,069.99 = 39,248.91/x
  3. Step 3: Cross multiply
    78,688.76x = 118,069.99 × 39,248.91
  4. Step 4: Simplify right side
    78,688.76x = 4,634,118,313.09
  5. Step 5: Solve for x
    x = 4,634,118,313.09/78,688.76
  6. Step 6: Final answer
    x = 58,891.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.