Home / 78,505,232.80-117,533,900.40-69,547,280.80

Finding the Fourth Proportional to 78,505,232.80, 117,533,900.40 and 69,547,280.80

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Solution

The fourth proportional to 78,505,232.80, 117,533,900.40 and 69,547,280.80 is: 104,122,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,505,232.80 : 117,533,900.40 = 69,547,280.80 : x
  2. Step 2: Convert to fraction form
    78,505,232.80/117,533,900.40 = 69,547,280.80/x
  3. Step 3: Cross multiply
    78,505,232.80x = 117,533,900.40 × 69,547,280.80
  4. Step 4: Simplify right side
    78,505,232.80x = 8,174,163,174,638,032
  5. Step 5: Solve for x
    x = 8,174,163,174,638,032/78,505,232.80
  6. Step 6: Final answer
    x = 104,122,526.40

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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.