Home / 79,430,406.52-119,148,297.66-21,138,142

Finding the Fourth Proportional to 79,430,406.52, 119,148,297.66 and 21,138,142

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Solution

The fourth proportional to 79,430,406.52, 119,148,297.66 and 21,138,142 is: 31,707,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,430,406.52 : 119,148,297.66 = 21,138,142 : x
  2. Step 2: Convert to fraction form
    79,430,406.52/119,148,297.66 = 21,138,142/x
  3. Step 3: Cross multiply
    79,430,406.52x = 119,148,297.66 × 21,138,142
  4. Step 4: Simplify right side
    79,430,406.52x = 2,518,573,634,995,347.50
  5. Step 5: Solve for x
    x = 2,518,573,634,995,347.50/79,430,406.52
  6. Step 6: Final answer
    x = 31,707,928.30

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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.