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Finding the Fourth Proportional to 26,907,929.19, 40,368,308.72 and 8,712,129.87

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Solution

The fourth proportional to 26,907,929.19, 40,368,308.72 and 8,712,129.87 is: 13,070,271.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,907,929.19 : 40,368,308.72 = 8,712,129.87 : x
  2. Step 2: Convert to fraction form
    26,907,929.19/40,368,308.72 = 8,712,129.87/x
  3. Step 3: Cross multiply
    26,907,929.19x = 40,368,308.72 × 8,712,129.87
  4. Step 4: Simplify right side
    26,907,929.19x = 351,693,948,157,332.81
  5. Step 5: Solve for x
    x = 351,693,948,157,332.81/26,907,929.19
  6. Step 6: Final answer
    x = 13,070,271.80

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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.