Home / 30,890,528-42,477,763.20-26,809,061.12

Finding the Fourth Proportional to 30,890,528, 42,477,763.20 and 26,809,061.12

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Solution

The fourth proportional to 30,890,528, 42,477,763.20 and 26,809,061.12 is: 36,865,311.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890,528 : 42,477,763.20 = 26,809,061.12 : x
  2. Step 2: Convert to fraction form
    30,890,528/42,477,763.20 = 26,809,061.12/x
  3. Step 3: Cross multiply
    30,890,528x = 42,477,763.20 × 26,809,061.12
  4. Step 4: Simplify right side
    30,890,528x = 1,138,788,949,869,687
  5. Step 5: Solve for x
    x = 1,138,788,949,869,687/30,890,528
  6. Step 6: Final answer
    x = 36,865,311.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.