Home / 85,527.40-128,444.70-82,762.60

Finding the Fourth Proportional to 85,527.40, 128,444.70 and 82,762.60

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Solution

The fourth proportional to 85,527.40, 128,444.70 and 82,762.60 is: 124,292.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,527.40 : 128,444.70 = 82,762.60 : x
  2. Step 2: Convert to fraction form
    85,527.40/128,444.70 = 82,762.60/x
  3. Step 3: Cross multiply
    85,527.40x = 128,444.70 × 82,762.60
  4. Step 4: Simplify right side
    85,527.40x = 10,630,417,328.22
  5. Step 5: Solve for x
    x = 10,630,417,328.22/85,527.40
  6. Step 6: Final answer
    x = 124,292.53

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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.