Home / 72,605,719.80-108,908,579.70-56,166,478.20

Finding the Fourth Proportional to 72,605,719.80, 108,908,579.70 and 56,166,478.20

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Solution

The fourth proportional to 72,605,719.80, 108,908,579.70 and 56,166,478.20 is: 84,249,717.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605,719.80 : 108,908,579.70 = 56,166,478.20 : x
  2. Step 2: Convert to fraction form
    72,605,719.80/108,908,579.70 = 56,166,478.20/x
  3. Step 3: Cross multiply
    72,605,719.80x = 108,908,579.70 × 56,166,478.20
  4. Step 4: Simplify right side
    72,605,719.80x = 6,117,011,367,513,013
  5. Step 5: Solve for x
    x = 6,117,011,367,513,013/72,605,719.80
  6. Step 6: Final answer
    x = 84,249,717.30

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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.