Home / 85,549,603.40-128,355,897.90-28,043,750.60

Finding the Fourth Proportional to 85,549,603.40, 128,355,897.90 and 28,043,750.60

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Solution

The fourth proportional to 85,549,603.40, 128,355,897.90 and 28,043,750.60 is: 42,075,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,549,603.40 : 128,355,897.90 = 28,043,750.60 : x
  2. Step 2: Convert to fraction form
    85,549,603.40/128,355,897.90 = 28,043,750.60/x
  3. Step 3: Cross multiply
    85,549,603.40x = 128,355,897.90 × 28,043,750.60
  4. Step 4: Simplify right side
    85,549,603.40x = 3,599,580,788,746,664
  5. Step 5: Solve for x
    x = 3,599,580,788,746,664/85,549,603.40
  6. Step 6: Final answer
    x = 42,075,949.46

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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.