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Finding the Fourth Proportional to 72,592,903.80, 108,889,355.70 and 56,153,662.20

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Solution

The fourth proportional to 72,592,903.80, 108,889,355.70 and 56,153,662.20 is: 84,230,493.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,592,903.80 : 108,889,355.70 = 56,153,662.20 : x
  2. Step 2: Convert to fraction form
    72,592,903.80/108,889,355.70 = 56,153,662.20/x
  3. Step 3: Cross multiply
    72,592,903.80x = 108,889,355.70 × 56,153,662.20
  4. Step 4: Simplify right side
    72,592,903.80x = 6,114,536,097,153,445
  5. Step 5: Solve for x
    x = 6,114,536,097,153,445/72,592,903.80
  6. Step 6: Final answer
    x = 84,230,493.30

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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.