Home / 78,988.18-118,503.02-28,392.34

Finding the Fourth Proportional to 78,988.18, 118,503.02 and 28,392.34

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Solution

The fourth proportional to 78,988.18, 118,503.02 and 28,392.34 is: 42,595.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,988.18 : 118,503.02 = 28,392.34 : x
  2. Step 2: Convert to fraction form
    78,988.18/118,503.02 = 28,392.34/x
  3. Step 3: Cross multiply
    78,988.18x = 118,503.02 × 28,392.34
  4. Step 4: Simplify right side
    78,988.18x = 3,364,577,809.59
  5. Step 5: Solve for x
    x = 3,364,577,809.59/78,988.18
  6. Step 6: Final answer
    x = 42,595.97

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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.