Home / 71,683.02-98,925.10-39,420.10

Finding the Fourth Proportional to 71,683.02, 98,925.10 and 39,420.10

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Solution

The fourth proportional to 71,683.02, 98,925.10 and 39,420.10 is: 54,401.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,683.02 : 98,925.10 = 39,420.10 : x
  2. Step 2: Convert to fraction form
    71,683.02/98,925.10 = 39,420.10/x
  3. Step 3: Cross multiply
    71,683.02x = 98,925.10 × 39,420.10
  4. Step 4: Simplify right side
    71,683.02x = 3,899,637,334.51
  5. Step 5: Solve for x
    x = 3,899,637,334.51/71,683.02
  6. Step 6: Final answer
    x = 54,401.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.