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Finding the Fourth Proportional to 64,015.45, 88,339.47 and 35,720.53

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Solution

The fourth proportional to 64,015.45, 88,339.47 and 35,720.53 is: 49,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,015.45 : 88,339.47 = 35,720.53 : x
  2. Step 2: Convert to fraction form
    64,015.45/88,339.47 = 35,720.53/x
  3. Step 3: Cross multiply
    64,015.45x = 88,339.47 × 35,720.53
  4. Step 4: Simplify right side
    64,015.45x = 3,155,532,688.32
  5. Step 5: Solve for x
    x = 3,155,532,688.32/64,015.45
  6. Step 6: Final answer
    x = 49,293.30

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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.