Home / 30,348,763.70-45,523,145.55-21,101,690.30

Finding the Fourth Proportional to 30,348,763.70, 45,523,145.55 and 21,101,690.30

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Solution

The fourth proportional to 30,348,763.70, 45,523,145.55 and 21,101,690.30 is: 31,652,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348,763.70 : 45,523,145.55 = 21,101,690.30 : x
  2. Step 2: Convert to fraction form
    30,348,763.70/45,523,145.55 = 21,101,690.30/x
  3. Step 3: Cross multiply
    30,348,763.70x = 45,523,145.55 × 21,101,690.30
  4. Step 4: Simplify right side
    30,348,763.70x = 960,615,318,877,923.12
  5. Step 5: Solve for x
    x = 960,615,318,877,923.12/30,348,763.70
  6. Step 6: Final answer
    x = 31,652,535.45

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1.5x scale

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.