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Finding the Fourth Proportional to 72,602,465.20, 108,903,697.80 and 36,696,007.60

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Solution

The fourth proportional to 72,602,465.20, 108,903,697.80 and 36,696,007.60 is: 55,044,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,602,465.20 : 108,903,697.80 = 36,696,007.60 : x
  2. Step 2: Convert to fraction form
    72,602,465.20/108,903,697.80 = 36,696,007.60/x
  3. Step 3: Cross multiply
    72,602,465.20x = 108,903,697.80 × 36,696,007.60
  4. Step 4: Simplify right side
    72,602,465.20x = 3,996,330,922,136,903.50
  5. Step 5: Solve for x
    x = 3,996,330,922,136,903.50/72,602,465.20
  6. Step 6: Final answer
    x = 55,044,011.40

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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.