Home / 85,931.19-128,866.03-29,756.22

Finding the Fourth Proportional to 85,931.19, 128,866.03 and 29,756.22

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Solution

The fourth proportional to 85,931.19, 128,866.03 and 29,756.22 is: 44,623.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,931.19 : 128,866.03 = 29,756.22 : x
  2. Step 2: Convert to fraction form
    85,931.19/128,866.03 = 29,756.22/x
  3. Step 3: Cross multiply
    85,931.19x = 128,866.03 × 29,756.22
  4. Step 4: Simplify right side
    85,931.19x = 3,834,565,381.57
  5. Step 5: Solve for x
    x = 3,834,565,381.57/85,931.19
  6. Step 6: Final answer
    x = 44,623.67

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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.