Home / 85,528.08-128,313.04-60,276.86

Finding the Fourth Proportional to 85,528.08, 128,313.04 and 60,276.86

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Solution

The fourth proportional to 85,528.08, 128,313.04 and 60,276.86 is: 90,430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,528.08 : 128,313.04 = 60,276.86 : x
  2. Step 2: Convert to fraction form
    85,528.08/128,313.04 = 60,276.86/x
  3. Step 3: Cross multiply
    85,528.08x = 128,313.04 × 60,276.86
  4. Step 4: Simplify right side
    85,528.08x = 7,734,307,148.25
  5. Step 5: Solve for x
    x = 7,734,307,148.25/85,528.08
  6. Step 6: Final answer
    x = 90,430.03

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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.