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Finding the Fourth Proportional to 30,896,652.60, 46,291,834.80 and 20,108,400.30

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Solution

The fourth proportional to 30,896,652.60, 46,291,834.80 and 20,108,400.30 is: 30,128,012.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,896,652.60 : 46,291,834.80 = 20,108,400.30 : x
  2. Step 2: Convert to fraction form
    30,896,652.60/46,291,834.80 = 20,108,400.30/x
  3. Step 3: Cross multiply
    30,896,652.60x = 46,291,834.80 × 20,108,400.30
  4. Step 4: Simplify right side
    30,896,652.60x = 930,854,744,779,870.38
  5. Step 5: Solve for x
    x = 930,854,744,779,870.38/30,896,652.60
  6. Step 6: Final answer
    x = 30,128,012.79

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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.