Home / 72,433,128.96-108,666,956.16-21,316,815.36

Finding the Fourth Proportional to 72,433,128.96, 108,666,956.16 and 21,316,815.36

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Solution

The fourth proportional to 72,433,128.96, 108,666,956.16 and 21,316,815.36 is: 31,980,303.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,433,128.96 : 108,666,956.16 = 21,316,815.36 : x
  2. Step 2: Convert to fraction form
    72,433,128.96/108,666,956.16 = 21,316,815.36/x
  3. Step 3: Cross multiply
    72,433,128.96x = 108,666,956.16 × 21,316,815.36
  4. Step 4: Simplify right side
    72,433,128.96x = 2,316,433,440,195,934.50
  5. Step 5: Solve for x
    x = 2,316,433,440,195,934.50/72,433,128.96
  6. Step 6: Final answer
    x = 31,980,303.40

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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.