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Finding the Fourth Proportional to 47,659.40, 65,772.71 and 28,802.60

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Solution

The fourth proportional to 47,659.40, 65,772.71 and 28,802.60 is: 39,749.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,659.40 : 65,772.71 = 28,802.60 : x
  2. Step 2: Convert to fraction form
    47,659.40/65,772.71 = 28,802.60/x
  3. Step 3: Cross multiply
    47,659.40x = 65,772.71 × 28,802.60
  4. Step 4: Simplify right side
    47,659.40x = 1,894,424,938.83
  5. Step 5: Solve for x
    x = 1,894,424,938.83/47,659.40
  6. Step 6: Final answer
    x = 39,749.24

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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.