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Finding the Fourth Proportional to 66,852.60, 92,256.84 and 38,558.40

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Solution

The fourth proportional to 66,852.60, 92,256.84 and 38,558.40 is: 53,210.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,852.60 : 92,256.84 = 38,558.40 : x
  2. Step 2: Convert to fraction form
    66,852.60/92,256.84 = 38,558.40/x
  3. Step 3: Cross multiply
    66,852.60x = 92,256.84 × 38,558.40
  4. Step 4: Simplify right side
    66,852.60x = 3,557,276,139.46
  5. Step 5: Solve for x
    x = 3,557,276,139.46/66,852.60
  6. Step 6: Final answer
    x = 53,210.74

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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.