Home / 43,312.80-64,969.20-40,688.40

Finding the Fourth Proportional to 43,312.80, 64,969.20 and 40,688.40

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Solution

The fourth proportional to 43,312.80, 64,969.20 and 40,688.40 is: 61,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,312.80 : 64,969.20 = 40,688.40 : x
  2. Step 2: Convert to fraction form
    43,312.80/64,969.20 = 40,688.40/x
  3. Step 3: Cross multiply
    43,312.80x = 64,969.20 × 40,688.40
  4. Step 4: Simplify right side
    43,312.80x = 2,643,492,797.28
  5. Step 5: Solve for x
    x = 2,643,492,797.28/43,312.80
  6. Step 6: Final answer
    x = 61,032.60

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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.