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Finding the Fourth Proportional to 84,657,411.60, 126,986,117.40 and 27,155,495.40

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Solution

The fourth proportional to 84,657,411.60, 126,986,117.40 and 27,155,495.40 is: 40,733,243.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,657,411.60 : 126,986,117.40 = 27,155,495.40 : x
  2. Step 2: Convert to fraction form
    84,657,411.60/126,986,117.40 = 27,155,495.40/x
  3. Step 3: Cross multiply
    84,657,411.60x = 126,986,117.40 × 27,155,495.40
  4. Step 4: Simplify right side
    84,657,411.60x = 3,448,370,926,919,560
  5. Step 5: Solve for x
    x = 3,448,370,926,919,560/84,657,411.60
  6. Step 6: Final answer
    x = 40,733,243.10

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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.