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Finding the Fourth Proportional to 78,280, 108,026.40 and 44,746.72

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Solution

The fourth proportional to 78,280, 108,026.40 and 44,746.72 is: 61,750.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280 : 108,026.40 = 44,746.72 : x
  2. Step 2: Convert to fraction form
    78,280/108,026.40 = 44,746.72/x
  3. Step 3: Cross multiply
    78,280x = 108,026.40 × 44,746.72
  4. Step 4: Simplify right side
    78,280x = 4,833,827,073.41
  5. Step 5: Solve for x
    x = 4,833,827,073.41/78,280
  6. Step 6: Final answer
    x = 61,750.47

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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.