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Finding the Fourth Proportional to 40,886.40, 61,300.80 and 15,916.80

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Solution

The fourth proportional to 40,886.40, 61,300.80 and 15,916.80 is: 23,863.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,886.40 : 61,300.80 = 15,916.80 : x
  2. Step 2: Convert to fraction form
    40,886.40/61,300.80 = 15,916.80/x
  3. Step 3: Cross multiply
    40,886.40x = 61,300.80 × 15,916.80
  4. Step 4: Simplify right side
    40,886.40x = 975,712,573.44
  5. Step 5: Solve for x
    x = 975,712,573.44/40,886.40
  6. Step 6: Final answer
    x = 23,863.99

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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.