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Finding the Fourth Proportional to 72,675,795.80, 109,013,693.70 and 56,551,482.20

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Solution

The fourth proportional to 72,675,795.80, 109,013,693.70 and 56,551,482.20 is: 84,827,223.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,675,795.80 : 109,013,693.70 = 56,551,482.20 : x
  2. Step 2: Convert to fraction form
    72,675,795.80/109,013,693.70 = 56,551,482.20/x
  3. Step 3: Cross multiply
    72,675,795.80x = 109,013,693.70 × 56,551,482.20
  4. Step 4: Simplify right side
    72,675,795.80x = 6,164,885,958,831,803
  5. Step 5: Solve for x
    x = 6,164,885,958,831,803/72,675,795.80
  6. Step 6: Final answer
    x = 84,827,223.30

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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.