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Finding the Fourth Proportional to 89,849,762.40, 134,774,643.60 and 86,322,568.80

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Solution

The fourth proportional to 89,849,762.40, 134,774,643.60 and 86,322,568.80 is: 129,483,853.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,849,762.40 : 134,774,643.60 = 86,322,568.80 : x
  2. Step 2: Convert to fraction form
    89,849,762.40/134,774,643.60 = 86,322,568.80/x
  3. Step 3: Cross multiply
    89,849,762.40x = 134,774,643.60 × 86,322,568.80
  4. Step 4: Simplify right side
    89,849,762.40x = 11,634,093,444,656,478
  5. Step 5: Solve for x
    x = 11,634,093,444,656,478/89,849,762.40
  6. Step 6: Final answer
    x = 129,483,853.20

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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.