Home / 85,632.55-128,364.12-40,574.76

Finding the Fourth Proportional to 85,632.55, 128,364.12 and 40,574.76

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Solution

The fourth proportional to 85,632.55, 128,364.12 and 40,574.76 is: 60,822.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,632.55 : 128,364.12 = 40,574.76 : x
  2. Step 2: Convert to fraction form
    85,632.55/128,364.12 = 40,574.76/x
  3. Step 3: Cross multiply
    85,632.55x = 128,364.12 × 40,574.76
  4. Step 4: Simplify right side
    85,632.55x = 5,208,343,307.67
  5. Step 5: Solve for x
    x = 5,208,343,307.67/85,632.55
  6. Step 6: Final answer
    x = 60,822.00

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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.