Home / 39,216,138.48-54,117,495-21,812,109.12

Finding the Fourth Proportional to 39,216,138.48, 54,117,495 and 21,812,109.12

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Solution

The fourth proportional to 39,216,138.48, 54,117,495 and 21,812,109.12 is: 30,100,278.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,216,138.48 : 54,117,495 = 21,812,109.12 : x
  2. Step 2: Convert to fraction form
    39,216,138.48/54,117,495 = 21,812,109.12/x
  3. Step 3: Cross multiply
    39,216,138.48x = 54,117,495 × 21,812,109.12
  4. Step 4: Simplify right side
    39,216,138.48x = 1,180,416,706,241,054.50
  5. Step 5: Solve for x
    x = 1,180,416,706,241,054.50/39,216,138.48
  6. Step 6: Final answer
    x = 30,100,278.92

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1.5x scale

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.